Trolley-guard.



J. LA W'TON.

TROLLEY GUARD.

APPLICATION FILED APR. 10, 1912.

AT RNEY 1 UNITED STATES PATENT OFFICE.

.iun v LAWTON, F IRYINGTON, NEW JERSEY, ASSIQNOR TO THE NOTWAL COMP'ANY, OF-NEWARK, NEW JERSEY.

' *igiooszs.

To all whom it may concern Be it known that 1, JOHN LAw'roN, a citizen of the United States, residing at Irvington, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Guards; and I do' hereby declare the following to be a. full, clear, and exact description of the invention, such as will enehle- 1 others skilled in the art to which it rippers twins to make and use the same reference being had to the accompanying drawings, and to figures of reference marked thereon, which form .a partot this specification. I

This invention relates to a trolley guard I which is nioiintedon the end of the trolleypole adjacent to the trolley-wheel and is of the type that has prq'eeting fingers or tenderst'o engage the t-reley wire if the trulle' f wheel j-um s'down fromthe-wire-due to strain or sioelc, or if the trolley is going around a curve, causing a transverse strain these studs not projecting as 'far .frourthe.

guard as the arms.

" her feature of the invention is a stop guges'the wire. to transmit. the our Mini :1; at the sumo time nets to limitthe swing of the. git-11rd so that it willnot swing: too far. The device is held in its nornuii position 'ireferahly by gravity.

The invention is illustrated in the accomi drawing, in \\'lIl('l1 ure a. side view of a trolley with "\rrl attached. the guard lie-lug shown outline in t-Wo'ditleren': positions. 1 :1 front view of Fig. i. Fig. s uzai P!,' "ll0ll tinmigrli the writer of the l'r-n ;,w'no-Ci. r

Trolley" I S pecifieatiqn of Letters Patent. 1 Application filed April 10, 1912. Serial N0. 689895.

TRoLLEYeUArin.

13, theiuuts 14 acting to lock the spindle in place. The spindle-is provided on one side with a shoulder 15, and on the other end, that is, on its threaded end 'ing nut 16. Between the hearing. nuts is mounted the guard which consists of sideplates 17 and 18, and between these sideplates, the collar 15 and the bearing nuts 16 Patented Aug. 11 1914,

with the beer- Y are the ball-bearings 19. Between'the sideplates 17 and 18 of the guard is the trolley-wheel 20 having a .oentrul groove Between the. sides of. the trolleywheel and the side-plates of the guard are the .ball-bearin s 22 which preferably run on a steel bus ling 23 within the trolleywheel wherebyvthe trolley-wheel lasts longer because its bearings being of steel will resist wear mueh'longer' than theiusuiil allbrass wheel. The 'g'uardis recessed on'its side-plates'as at 24 to recei've the sides of the trolle bwheel so th it'the-only pert ex posed to the .wire is the 'gmove' 21. 'The,

lower portion 95 of the guard isweighted,

that is, it is mnde he-arier than-the balance" so that this portion normally points downi rii'rd, the side-plates at the bottom portion being connected by a bolt'2i'i fastened by the nuts 37 and supporting; a suitable roller 28. The arms 12 are long'enough to allow the weighted portion 25 of the guard to swing and lxxing nitirmully if'ertieul on account of the weighted portion holding'the guard in its. proper position, are the arms 29 which may be slightly divergent and have their inner faces 29 rounded. The arms 29 ha e renders ill) to assist in finding the Wire when necessary. On the front of the sideplate are the studs 3 which do not project as. far from the side-plates of the guard as the arms 29.

To facilitate one. of the urms 12 is made of two pieces as Slluxn in Fi l and atthe right hand side in Fig. "2-, the two members of the arm being designated by the reference imimerals 32 and 3 .3%. the?!) members being cut away to permit tlwm to l): fitted togethe to make this innrr and outer faces, and being held tolzit' by helts 3 1 fastened by suitable nuts This facilitates the removal of the memher 3) of the arm, and then by loosening the. out 1 1 at. the other end of the spindle, the

spindle and the wheel, along with the guard,

1rd between the arms and beyond them; I roj .eting upwardly from the side-plates the essembiing of the parts 7 can be withdrawn together. This provides a quick means for taking out a tr0lley-wheel and also allows of a correspondingly quick installation ofa new wheel or the return of an old one. A suitable duct 36 is provided for oiling purposes.

The trolley-pole is handled by means of a rope or similar device as at present, and when the trolley is in the position shown in Fig. 1 and is moving forward, the wire is inclosed by two comparatively high walls on each side formed by the sides of the groove in the trolley-wheel and by the arms 29 on -each side thereof. If the arms 29 meet an obstruction, such as a. cross wire, or any projection on a wire, the arms are pushed back and the guard swings freely on its bearings to the position shown at a in Fig. 1, and the studs 31 are then swung to a position flanking the wire, whereby the wire is engaged both to the rear and to the front of the center of the spindle on which the trolley-wheel is rotating to doubly insure the tracking of the wheel on the wire.

'jIf the ear isgoing at high speed when the a ins 29 are engaged, they are swung down w th some force to the dotted position shown at 7) in Fig. 1., which throws tl'i'e studs 31 slightly to the rear of the eenter'otthe trolley-wheel and causes the stop 28lo engage the under side of the trolley zwire to limit the swingof the guard. When the guard is so limited in its motion it quickly returns to its normal position, and at any point in the swinging of the guard it will be noted that either the guard, the studs or the weighted ptjrtion of the guard are flanking the trolley wire in addition to the groove in the trolleywheel.

Having thus described my invention, what I claim 1s:

1. A trolley comprising a freely swinging.

port for the wheel and guard and constructed to permit the guard to swing freely.

2. A trolley comprising a guard consisting of side plates, the side plates having vertically pro ecting arms at the top and having weighted lower portions, a stop connecting the lower portions and being arranged to engage a trolley wire when the guard is swung, the weighted portions being made wide and long to extend a considerable distance to all sides of the stop whereby when the stop engages the trolley Wire, the weighted portions extend above the trolley wire and act as a guard.

,In testimony, that I claim the foregoing, I have hereunto set my hand this 6th day of April 1912.

JOHN LAVVTON. Witnesses:

Wu, H. Camrmm, THEO. AGHTERMANN 

